void DoubleStringsListSelectionWidget::unselectAllStrings() {
  for (int i = 0 ; i < outputList->count() ; ++i) {
    inputList->addItem(new QListWidgetItem(*(outputList->item(i))));
  }

  clearSelectedStringsList();
}
void GraphPropertiesSelectionWidget::clearLists() {
  clearSelectedStringsList();
  clearUnselectedStringsList();
}